Fastening device for filter bag of centrifugal machine

Abstract

The fastening device comprises an inner rotary drum with an opening in the upper end, the inner side wall of the inner rotary drum is covered with the filter bag, the top of the inner rotary drum is covered with a liquid baffle, and the periphery of the bottom of the liquid baffle extends downwards in an inner cavity of the inner rotary drum to form an annular vertical wall. A circle of protruding check ring is fixed to the position, close to the lower end, of the outer circumferential face of the vertical wall, the upper end of an opening of the filter bag is arranged on the outer side face of the vertical wall in a sleeving mode, a fixing rope penetrates into the edge of the top of the filter bag, a hoop body is arranged on the portion, between the fixing rope and the check ring, of the outer side face of the filter bag, and the filter bag is fastened to the vertical wall through the hoop body. When the threaded connectors are rotated, the two ends can be synchronously locked or separated, the operation process is simple and effective, the number of the arc-shaped rings and the number of the corresponding threaded connectors are selected according to needs, the filter bag is more convenient and rapid to install, and the connection position of the filter bag and the hoop body after installation is smooth, even in stress and high in stress strength.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuges, in particular to a fastening device for a centrifuge filter bag. Background Art

[0002] The filter bag of the drum in the hanging bag centrifuge needs to be replaced frequently, so the top of the filter bag needs to be detachable. In order to install the filter bag stably, more fasteners are used for multi-point positioning. This makes the filter bag unevenly stressed and easily damaged under the action of centrifugal force. In addition, the process of installing and removing the filter bag is also more troublesome. If the number of fasteners is small, the fixed position of the filter bag is easy to fall off, affecting the dehydration effect. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a fastening device for a centrifuge filter bag, so as to solve the problem of uneven force and loose fixation of the filter bag during installation.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A fastening device for a centrifuge filter bag comprises an inner drum with an opening at the upper end, the inner side wall of the inner drum is covered with a filter bag, the top of the inner drum is covered with a liquid baffle plate, the bottom of the liquid baffle plate is surrounded by an annular vertical wall extending downward in the inner cavity of the inner drum, a circle of protruding baffle rings is fixed on the outer circumferential surface of the vertical wall near the lower end, the open upper end of the filter bag is sleeved on the outer side surface of the vertical wall, a fixing rope is inserted into the top edge of the filter bag, and a clamp body is arranged on the outer side surface of the filter bag between the fixing rope and the baffle ring, and the clamp body fastens the filter bag to the vertical wall.

[0006] As a preferred embodiment, the clamp body includes one or more arc-shaped rings connected end to end to form a circle, and screw heads are provided on the ends of the arc-shaped rings. The joints of the arc-shaped rings are connected by threaded joints, and threaded holes are respectively provided at both ends of the threaded joints in the axial direction, and the screw heads are threadedly connected to the threaded holes at both ends of the threaded joints.

[0007] As a preferred embodiment, a through hole perpendicular to the axis of the threaded joint is provided in the middle of the threaded joint, and the through hole is used to insert a tool for screwing the threaded joint around the axis.

[0008] As a preferred embodiment, the arc ring is a continuous circle that is disconnected at one point, and the screw heads at both ends of the arc ring are connected by a threaded joint at the disconnected point.

[0009] As a preferred embodiment, the arc ring is configured as two symmetrically separated semicircles, and two opposite portions of the two arc rings are connected via a threaded joint respectively.

[0010] As a preferred embodiment, the arc rings are configured as three identical arcs, and the three arc rings can form a circle, and the first and last three opposite positions of each arc ring are connected by a threaded joint respectively.

[0011] The beneficial effects of the utility model are as follows: the filter bag is clamped on the vertical wall by combining into a circular arc ring, the arc ring is connected by a threaded joint, which is convenient for disassembly and tightening, the threaded holes on both sides of the threaded joint are connected to the threaded rods on the arc ring, and when the threaded joint is rotated, the two ends can be locked or disengaged synchronously, the operation process is simple and effective, the number of arc rings and the corresponding number of threaded joints can be selected according to needs, when installing the filter bag, it is more convenient and quick, and after installation, the connection between the filter bag and the clamp body is flat, the force is evenly applied, and the force strength is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the clamp body of the utility model;

[0015] Figure 3 This is a partial enlarged view of the clamp body of the utility model;

[0016] Figure 1~Figure 3 Explanation of the reference numerals in the accompanying drawings: 1. clamp body; 11. arc ring; 12. threaded joint; 13. screw head; 14. through hole; 3. inner drum; 4. liquid baffle plate; 5. filter bag; 6. fixing rope; 41. vertical wall; 42. baffle ring. DETAILED DESCRIPTION

[0017] The specific implementation scheme of the utility model is described in detail below in conjunction with the accompanying drawings.

[0018] like Figure 1~Figure 3 The fastening device of the centrifuge filter bag shown in the figure comprises an inner drum 3 with an opening at the upper end, the inner side wall of the inner drum 3 is covered with a filter bag 5, the top of the inner drum 3 is covered with a liquid retaining plate 4, and the bottom of the liquid retaining plate 4 is surrounded by an annular vertical wall 41 extending downward in the inner cavity of the inner drum 3, and a circle of protruding retaining rings 42 are fixed on the outer circumferential surface of the vertical wall 41 near the lower end, the open upper end of the filter bag 5 is sleeved on the outer side surface of the vertical wall 41, a fixing rope 6 is inserted into the top edge of the filter bag 5, and a clamp body 1 is provided on the outer side surface of the filter bag 5 between the fixing rope 6 and the retaining ring 42, and the clamp body 1 fastens the filter bag 5 to the vertical wall 41.

[0019] Specifically, in order to fix the filter bag 5 tightly, a retaining ring 42 is provided at the lower end of the vertical wall 41. The retaining ring 42 limits the upper clamp body 1 to prevent the clamp body 1 from falling off the vertical wall 41. The fixing rope 6 simply fixes the filter bag 5 to facilitate the installation of the clamp body 1.

[0020] like Figure 2 and Figure 3 The clamp body 1 includes one or more arc rings 11 connected end to end to form a circle, and a screw head 13 is provided at the end of the arc ring 11. The connecting parts of the arc rings 11 are connected by a threaded joint 12. The two ends of the threaded joint 12 are respectively provided with threaded holes along the axial direction, and the screw head 13 is threadedly connected in the threaded holes at the two ends of the threaded joint 12. The arc ring 11 and the threaded joint 12 are connected to form a circle, and the detachable setting can conveniently and firmly lock the filter bag 5 on the vertical wall 41.

[0021] The threaded joint 12 is provided with a through hole 14 perpendicular to its axis in the middle thereof, and the through hole 14 is used to insert a tool for screwing the threaded joint 12 around the axis. When the threaded joint 12 is rotated around the axis, the threaded joint 12 will be locked or separated with the screw heads 13 at both ends, and the rod-shaped locking tool is inserted into the through hole 14, and the threaded joint 12 is rotated on the screw heads 13 at both ends to be locked or loosened.

[0022] In the first embodiment, the arc ring 11 is a continuous circle that is broken at one point, and the screw heads 13 at both ends of the arc ring 11 are connected at the broken point by a threaded joint 12. An arc ring 11 is bent into a circle, and the joint of the arc ring 11 is connected by a threaded joint 12, so there are few parts and the whole is continuous.

[0023] In the second embodiment, the arc ring 11 is configured as two symmetrically separated semicircles, and two opposite parts of the two arc rings 11 are respectively connected by a threaded joint 12. The arc rings 11 are split into two general arc rings, which provide a large space for installing and putting down the filter bag 5 and are easier to operate.

[0024] In the third embodiment, the arc rings 11 are configured as three identical arcs, and the three arc rings 11 can form a circle, and the first and last three opposite positions of each arc ring 11 are respectively connected by a threaded joint 12. The three arc rings 11 are suitable for large centrifuges, and are respectively used to tighten each position of the filter bag 5, so that the filter bag 5 is evenly stressed during installation.

[0025] The working process of the utility model is as follows:

[0026] According to Figure 1-3, first, select Figure 2The two opposing semicircular arc circles 11 and two threaded joints 12 are shown, and then the inner cavity of the inner drum 3 is covered with a filter bag 5, the top of the filter bag 5 is inserted into the fixing rope 6, and the fixing rope 6 is locked and wrapped around the upper end of the outer surface of the vertical wall 41. Finally, the two arc circles 11 are placed on the outer side surface of the upper end of the filter bag 5, on the outer circumferential surface of the vertical wall 41, in the middle of the fixing rope 6 and the retaining ring 42, and the two connecting parts of the arc circles 11 are connected respectively by two threaded joints 12, so that the two semicircular arc circles 11 are combined into a circle, and the filter bag 5 is locked on the outer circumferential side surface of the vertical wall 41.

[0027] The above embodiments are only illustrative of the principles and effects of the invention of the utility model, as well as some embodiments of its application, and are not intended to limit the invention of the utility model. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the invention, and all of these belong to the protection scope of the invention.

Claims

1. A fastening device for a centrifuge filter bag, characterized in that: The invention comprises an inner drum (3) with an opening at the upper end, the inner side wall of the inner drum (3) being covered with a filter bag (5), the top of the inner drum (3) being covered with a liquid retaining plate (4), the bottom of the liquid retaining plate (4) being surrounded by an annular vertical wall (41) extending downward in the inner cavity of the inner drum (3), a protruding retaining ring (42) being fixed on the outer circumferential surface of the vertical wall (41) near the lower end, the open upper end of the filter bag (5) being sleeved on the outer side surface of the vertical wall (41), a fixing rope (6) being inserted into the top edge of the filter bag (5), a clamp body (1) being provided on the outer side surface of the filter bag (5) between the fixing rope (6) and the retaining ring (42), the clamp body (1) fastening the filter bag (5) to the vertical wall (41).

2. The fastening device for centrifuge filter bag according to claim 1, characterized in that: The clamp body (1) comprises one or more arc-shaped rings (11) which are connected end to end in sequence to form a circle. The ends of the arc-shaped rings (11) are provided with screw heads (13). The connecting parts of the arc-shaped rings (11) are connected via threaded joints (12). The two ends of the threaded joints (12) are respectively provided with threaded holes along the axial direction. The screw heads (13) are threadedly connected in the threaded holes at the two ends of the threaded joints (12).

3. The fastening device for centrifuge filter bag according to claim 2, characterized in that: A through hole (14) perpendicular to the axis of the threaded joint (12) is provided in the middle of the threaded joint (12), and the through hole (14) is used to insert a tool for screwing the threaded joint (12) around the axis.

4. The fastening device for centrifuge filter bag according to claim 2, characterized in that: The arc ring (11) is a continuous circle that is disconnected at one point, and the screw heads (13) at both ends of the arc ring (11) are connected at the disconnected point via a threaded joint (12).

5. The fastening device for centrifuge filter bag according to claim 2, characterized in that: The arc-shaped ring (11) is configured as two symmetrically separated semicircles, and two opposite locations of the two arc-shaped rings (11) are respectively connected via a threaded joint (12).

6. The fastening device for centrifuge filter bag according to claim 2, characterized in that: The arc circles (11) are arranged in three identical arc shapes, and the three arc circles (11) can form a circle, and the first and last three opposite positions of each arc circle (11) are respectively connected via a threaded joint (12).

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